%0 Journal Article %A V. A. Andrunakievich %A M. I. Vodinchar %T IV All-Union Symposium on Ring Theory, Theory of Algebras, and Module Theory %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1981 %V 36 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1981_36_5_a32/ %G ru %F RM_1981_36_5_a32